#pragma once
#include <vector>

using namespace std;

namespace reverseString
{
	class Solution {
	public:
		void reverseString(vector<char>& s) {
			int tmp;
			int left = 0;
			int right = s.size() - 1;
			while (left < right)
			{
				tmp = s[left];
				s[left] = s[right];
				s[right] = tmp;
				left++;
				right--;
			}
		}
	};
}